Hello All,
We've got a foundation we waterproofed with swelling waterstops (bentonite clay style).
The stops were placed in the classic location, behind the reinforcement bars. The bars were epoxied in for this project, a first time we allowed epoxy instead of cast in place.
Please see the...
We've been asked to release our structural calculations on a project. The client has been told by the Architect that we had to redesign a number of elements (this is false, and I believe occurred because the Architect had issued drawings with incorrect sizes, which we insisted be revised), and...
I keep intending to program a spreadsheet for doing anchor design. I thought I would check to see if anyone was willing to share before I put my time into this... So: Anybody have a good, free, spreadsheet for Annex D (USA = Appendix D)?
All,
Do you have any experience with this software? A quick sample and so far it seems fantastic; why have I never heard of this stuff?
That question is only partiallh rhetorical...
This says it all in terms of what I want to discuss; do you believe it? How do you approach your own work? I have always been an avowed spreadsheet guy, but this had the exact intended effect and has made me *pause* to think.
Thoughts?
Source...
If you have a material you know to be produced to both ASTM A307 Grade A (no Fy specified, Fu >= 60ksi) as well as SAE J429 Grade 2 (Fy >= 57ksi, Fu >= 74ksi), would you be comfortable using the Fy = 57 ksi for the purpose of structural design?
It is really bothering me, and I want other...
Hello All,
Long time reader, first return post. Long story, not germane to the issue. Need some opinions...
I did a design using A307 threaded bar, knowing the fabricator and their source of stock. I specified A307 Gr A, S1, as I needed weldable. The City's engineer checked the design and...
Hello All,
I'm stumped. Just got called to site where we've been working on a condo with a single storey basement garage which needs midlife repair due to delaminations typical of a garage where tires are constantly tracking in salts and water, etc. We did a preliminary report some weeks ago...
http://www.cbc.ca/news/canada/toronto/bedford-park-house-collapse-kills-19-year-old-construction-worker-1.2760888
Terrible to see. What do you think the chances are there was a Structural Engineer involved?
Hello All,
Is it still possible to actually purchase a structural analysis package for two and three dimension frame type problems? Everything seems to have gone to subscription or quasi-subscription models. I am not interested in becoming someone's "after-work" or "forever" payee.
I had...
I'm being asked for a "complete schedule of the hangers, brackets and fasteners" for a job we recently completed. This is the third time in as many months that I've been asked for something I have always believed to be the contractor's responsibility. This is one of the things that shop...
Has anyone seen a styrofoam lining used to separate a residential walk-out foundation from the poured slab on the inside? I couldn't think of any reason why this would be done... See attached photo (wall to slab interface shown). I'll post a sketch if anyone is unclear.
Pay no attention to...
Morning All,
When do you apply combined actions? The classic case of a simply supported beam is what most of us were first trained on, but this results in a (forgive me) simplified understanding of the stresses in the beam. Further to this, most engineers' "first" beams are either Steel or...
In chatting on another thread, AELLC suggested this might be a fun topic. I agree.
I will get the ball rolling with the attached photo. This is meant to be a full moment, 25% shear, connection to an equal size embedded column as the base for a portal frame which supports 100% glass glazing...
Jack Posts - Anyone else seeing more and more of these little steel screw-columns which are not rated for permanent loads? They seem to be pushing the old standard steel jack post out of the market. The one's I've seen are all painted grey, and the most common manufacturer seems to be "Tiger...
Hello All,
I've asked for Hot Dip Galv on a project, and the Contractor has asked if there are any paint options. I pointed out that I would only approve an alternative with the Owner's consent, but it seems that my old go-to products are no longer on the market.
Does anyone know of a good...
Hello All,
I've asked a more detailed version of this over in Demolition & Renovation Engineering, but I wanted to get your opinions:
- How far do you push *knowing* the cause of a deterioration when it does not appear to have resulted in a dangerous condition?
- At what point do you involve...
Hello All,
So we're being asked to prepare a design for a pair of existing windows to be cut wider, from 12"x14" and 24"x33" to 24"x48" each. I've done this type of work a number of times before, but what is bothering me this time is that The interior surface of the wall is heavily salt...
